import java.util.ArrayList;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;

public class Test2 {
    public static void main(String[] args) {
        /*
        练习:
        创建一个ArrayList集合,并添加以下字符串,字符串中前面是姓名,后面是年龄"zhangsan,23""lisi,24""wangwu,25"
        保留年龄大于等于24岁的人,并将结果收集到Map集合中,姓名为键,年龄为值
        */

        //1.创建一个ArrayList集合
        ArrayList<String> list = new ArrayList<>();
        //2.添加字符
        list.add("zhangsan,23");
        list.add("lisi,24");
        list.add("wangwu,25");
        //3.保留年龄大于等于24岁的人
        /*list.stream().filter(s->Integer.parseInt(s.split(",")[1])>=24)
                .collect(Collectors.toMap(new Function<String, String>() {
                    @Override
                    public String apply(String s) {
                        return s.split(",")[0];
                    }
                }, new Function<String, Integer>() {
                    @Override
                    public Integer apply(String s) {
                        return Integer.parseInt(s.split(",")[1]);
                    }
                }));*/
        Map<String, Integer> map = list.stream()
                .filter(s -> Integer.parseInt(s.split(",")[1]) >= 24)
                .collect(Collectors.toMap(
                        s -> s.split(",")[0],
                        s -> Integer
                                .parseInt(s.split(",")[1])));
        System.out.println(map);
    }
}
